Local Calling Guide

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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 217

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-217 A Dorchester MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-217 0 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-217 1 Dorchester MA   892D ONVOY, LLC - MA 128   2010-03-15   
857-217 2 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-217 3 Dorchester MA   829J PAETEC ITEL, LLC 128   2002-05-11   
857-217 4 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-217 5 Dorchester MA   5562 METROPCS, INC. 128   2011-12-05   
857-217 6 Dorchester MA   5562 METROPCS, INC. 128   2011-12-05   
857-217 7 Dorchester MA   5562 METROPCS, INC. 128   2011-12-05   
857-217 8 Dorchester MA   5562 METROPCS, INC. 128   2011-12-05   
857-217 9 Dorchester MA   145J TERRA NOVA TELECOM INC. 128   2024-02-08   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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